Structural Wood Design: - Asd/lrfd

"Factored" loads increase the design burden based on the uncertainty of the load type (e.g., higher factors for live loads vs. dead loads).

Traditional, deterministic method based on elastic design . Structural wood design: ASD/LRFD

Modern, reliability-based method that uses statistical probability . "Factored" loads increase the design burden based on

The choice often depends on the specific project requirements or the engineer's preference: LRFD versus ASD for Wood Design Structural wood design: ASD/LRFD

Applies separate factors to both loads (Load Factors) and material strength (Resistance Factors).

Applies a single Factor of Safety to the material's ultimate strength to determine "allowable" stresses. Loads: Uses actual expected (unfactored) service loads.